In geometry, a translation is the shifting of a figure from one place to another without rotating, reflecting or changing its size. This is done by moving the vertices of the figure the prescribed number of spaces on a coordinate plane and then drawing the new figure.
These PFDs are designed to keep the wearer in a vertical position, but it is the wearersâ responsibility to maneuver themselves into a face-up position. Type III PFDs will keep unconscious wearers face-up just as well as a Type II vest.
There are three main types of this protective top that are widely available. Round smocks ones have an open neckline as well as a collar that is round and flat. This allows the garment to be reversible, able to be used on both sides. They are also made in a pullover style, which allows workers to quickly put them on.